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Revision tags: llvmorg-20.1.0, llvmorg-20.1.0-rc3, llvmorg-20.1.0-rc2, llvmorg-20.1.0-rc1, llvmorg-21-init, llvmorg-19.1.7, llvmorg-19.1.6, llvmorg-19.1.5, llvmorg-19.1.4, llvmorg-19.1.3, llvmorg-19.1.2, llvmorg-19.1.1, llvmorg-19.1.0, llvmorg-19.1.0-rc4, llvmorg-19.1.0-rc3, llvmorg-19.1.0-rc2, llvmorg-19.1.0-rc1, llvmorg-20-init, llvmorg-18.1.8, llvmorg-18.1.7, llvmorg-18.1.6, llvmorg-18.1.5, llvmorg-18.1.4, llvmorg-18.1.3, llvmorg-18.1.2, llvmorg-18.1.1, llvmorg-18.1.0, llvmorg-18.1.0-rc4, llvmorg-18.1.0-rc3, llvmorg-18.1.0-rc2, llvmorg-18.1.0-rc1, llvmorg-19-init, llvmorg-17.0.6, llvmorg-17.0.5, llvmorg-17.0.4, llvmorg-17.0.3, llvmorg-17.0.2, llvmorg-17.0.1, llvmorg-17.0.0, llvmorg-17.0.0-rc4, llvmorg-17.0.0-rc3, llvmorg-17.0.0-rc2, llvmorg-17.0.0-rc1, llvmorg-18-init, llvmorg-16.0.6, llvmorg-16.0.5, llvmorg-16.0.4, llvmorg-16.0.3, llvmorg-16.0.2, llvmorg-16.0.1, llvmorg-16.0.0, llvmorg-16.0.0-rc4, llvmorg-16.0.0-rc3, llvmorg-16.0.0-rc2, llvmorg-16.0.0-rc1, llvmorg-17-init, llvmorg-15.0.7, llvmorg-15.0.6, llvmorg-15.0.5, llvmorg-15.0.4, llvmorg-15.0.3, llvmorg-15.0.2, llvmorg-15.0.1, llvmorg-15.0.0, llvmorg-15.0.0-rc3, llvmorg-15.0.0-rc2, llvmorg-15.0.0-rc1, llvmorg-16-init, llvmorg-14.0.6, llvmorg-14.0.5, llvmorg-14.0.4, llvmorg-14.0.3, llvmorg-14.0.2, llvmorg-14.0.1, llvmorg-14.0.0, llvmorg-14.0.0-rc4, llvmorg-14.0.0-rc3, llvmorg-14.0.0-rc2, llvmorg-14.0.0-rc1, llvmorg-15-init, llvmorg-13.0.1, llvmorg-13.0.1-rc3, llvmorg-13.0.1-rc2 |
| #
45f6d552 |
| 25-Jun-2021 |
Andrew Browne <[email protected]> |
[DFSan] Change shadow and origin memory layouts to match MSan.
Previously on x86_64:
+--------------------+ 0x800000000000 (top of memory)
| application memory |
+--------------------+ 0x7000
[DFSan] Change shadow and origin memory layouts to match MSan.
Previously on x86_64:
+--------------------+ 0x800000000000 (top of memory)
| application memory |
+--------------------+ 0x700000008000 (kAppAddr)
| |
| unused |
| |
+--------------------+ 0x300000000000 (kUnusedAddr)
| origin |
+--------------------+ 0x200000008000 (kOriginAddr)
| unused |
+--------------------+ 0x200000000000
| shadow memory |
+--------------------+ 0x100000008000 (kShadowAddr)
| unused |
+--------------------+ 0x000000010000
| reserved by kernel |
+--------------------+ 0x000000000000
MEM_TO_SHADOW(mem) = mem & ~0x600000000000
SHADOW_TO_ORIGIN(shadow) = kOriginAddr - kShadowAddr + shadow
Now for x86_64:
+--------------------+ 0x800000000000 (top of memory)
| application 3 |
+--------------------+ 0x700000000000
| invalid |
+--------------------+ 0x610000000000
| origin 1 |
+--------------------+ 0x600000000000
| application 2 |
+--------------------+ 0x510000000000
| shadow 1 |
+--------------------+ 0x500000000000
| invalid |
+--------------------+ 0x400000000000
| origin 3 |
+--------------------+ 0x300000000000
| shadow 3 |
+--------------------+ 0x200000000000
| origin 2 |
+--------------------+ 0x110000000000
| invalid |
+--------------------+ 0x100000000000
| shadow 2 |
+--------------------+ 0x010000000000
| application 1 |
+--------------------+ 0x000000000000
MEM_TO_SHADOW(mem) = mem ^ 0x500000000000
SHADOW_TO_ORIGIN(shadow) = shadow + 0x100000000000
Reviewed By: stephan.yichao.zhao, gbalats
Differential Revision: https://reviews.llvm.org/D104896
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